Quarterly report [Sections 13 or 15(d)]

Securitizations and Other Variable Interest Entities - Other Asset-backed VIEs (Details)

Securitizations and Other Variable Interest Entities - Other Asset-backed VIEs (Details) - USD ($) $ in Millions	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
On-balance sheet assets
Trading account assets	$ 335,566		$ 314,460
Debt securities carried at fair value	404,636		358,607
Held-to-maturity securities	531,449		558,713
Loans and leases	1,165,900		1,095,835
Allowance for loan and lease losses	(13,252)	$ (13,291)	(13,240)	$ (13,251)	$ (13,238)	$ (13,342)
Other assets	168,755		162,056
Total assets	3,403,716		3,261,519	$ 3,324,293
On-balance sheet liabilities
Long-term debt	311,484		283,279
Total liabilities	3,099,564		2,965,960
Consolidated VIEs
On-balance sheet assets
Trading account assets	6,063		5,575
Loans and leases	18,007		19,144
Allowance for loan and lease losses	(889)		(919)
Other assets	614		319
Total assets	23,795		24,119
On-balance sheet liabilities
Long-term debt	8,420		8,457
All other liabilities	22		21
Total liabilities	13,422		11,807
Credit Card and Automobile \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	0		0
On-balance sheet assets
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	0		0
Total retained positions	0		0
Total assets	0		0
Credit Card and Automobile \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	8,443		9,385
On-balance sheet assets
Trading account assets	0		0
Debt securities carried at fair value	0		0
Loans and leases	17,074		18,110
Allowance for loan and lease losses	(893)		(924)
Other assets	201		195
Total assets	16,382		17,381
On-balance sheet liabilities
Short-term borrowings	0		0
Long-term debt	7,917		7,975
All other liabilities	22		21
Total liabilities	7,939		7,996
Residual interests	3,600		4,500
Credit Card and Automobile \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	0		0
Debt securities carried at fair value	0		0
Held-to-maturity securities	0		0
Resecuritization Trusts and Customer VIEs \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	5,976		5,300
On-balance sheet assets
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	1,256		868
Total retained positions	5,976		5,301
Total assets	31,978		24,216
Resecuritization Trusts and Customer VIEs \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	177		583
On-balance sheet assets
Trading account assets	395		1,002
Debt securities carried at fair value	0		0
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	40		39
Total assets	435		1,041
On-balance sheet liabilities
Short-term borrowings	0		0
Long-term debt	258		458
All other liabilities	0		0
Total liabilities	258		458
Resecuritization Trusts and Customer VIEs \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	2,153		1,641
Debt securities carried at fair value	763		809
Held-to-maturity securities	1,804		1,983
Municipal Bond Trusts and CDOs \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	2,817		1,839
On-balance sheet assets
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	5		6
Total retained positions	19		22
Total assets	7,678		6,474
Municipal Bond Trusts and CDOs \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	5,163		3,519
On-balance sheet assets
Trading account assets	4,793		3,436
Debt securities carried at fair value	370		83
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	0		0
Total assets	5,163		3,519
On-balance sheet liabilities
Short-term borrowings	4,980		3,329
Long-term debt	0		0
All other liabilities	0		0
Total liabilities	4,980		3,329
Municipal Bond Trusts and CDOs \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	14		16
Debt securities carried at fair value	0		0
Held-to-maturity securities	0		0
Investment VIEs and Leveraged Lease Trusts \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	4,049		2,454
On-balance sheet assets
Loans and leases	1,397		70
Allowance for loan and lease losses	(2)		(2)
Other assets	1,983		1,522
Total retained positions	3,540		1,944
Total assets	27,822		22,965
Investment VIEs and Leveraged Lease Trusts \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	932		1,012
On-balance sheet assets
Trading account assets	22		5
Debt securities carried at fair value	0		0
Loans and leases	916		1,012
Allowance for loan and lease losses	(1)		(1)
Other assets	2		1
Total assets	939		1,017
On-balance sheet liabilities
Short-term borrowings	0		0
Long-term debt	7		5
All other liabilities	0		0
Total liabilities	7		5
Investment VIEs and Leveraged Lease Trusts \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	162		354
Debt securities carried at fair value	0		0
Held-to-maturity securities	$ 0		$ 0